The mass of 112 cm3 of NH3 gas at STP is

Question

The mass of 112 cm3 of NH3 gas at STP is (A) 0.085 g (B) 0.850 g (C) 8.500 g (D) 80.500 g

Tardigrade Admin · Accepted Answer

1 mol of NH 3=17 g =22400 cm 3 at STP i.e., 22400 cm 3 of NH 3 at STP have mass =17 g ∴ 112 cm 3 of NH 3 at STP will have mass =(17/22400) × 112=0.085 g

Q. The mass of $112 c m^{3}$ of $N H_{3}$ gas at $STP$ is

$0.085 g$

$0.850 g$

$8.500 g$

$80.500 g$

$1 m o l$ of $N H_{3} = 17 g = 22400 c m^{3}$ at STP

i.e., $22400 c m^{3}$ of $N H_{3}$ at STP have mass $= 17 g$

$∴ 112 c m^{3}$ of $N H_{3}$ at STP will have mass

$= \frac{17}{22400} \times 112 = 0.085 g$

Q. The mass of 112cm3 of NH3​ gas at STP is

0.085g

0.850g

8.500g

80.500g